Where are the oxygen sensors located?

2005 GMC SAVANA
220,000 MILES • 4.8L • V8 • 2WD • AUTOMATIC
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WKELLEY2020
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  • 4 POSTS
I need to change oxygen sensor bank 1 and oxygen sensor bank 2 but I don’t know where they are located. Could someone please tell where they are located?
Feb 12, 2021 at 12:38 AM
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ASEMASTER6371
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Good morning,

I posted the location and procedures for replacing the sensors.

https://www.2carpros.com/articles/how-an-oxygen-sensor-works

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Roy

HEATED OXYGEN SENSOR (HO2S) REPLACEMENT BANK 1 SENSOR 1

TOOLS REQUIRED
J 39194-B Oxygen Sensor Wrench

REMOVAL PROCEDURE
1. Raise the vehicle.

CAUTION: Refer to Vehicle Lifting Caution in Service Precautions.


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2. Disconnect the connector (1) for the HO2S.

NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Service Precautions.

3. Remove the HO2S (2) using a J 39194-B.

NOTE: Refer to Excessive Force and Oxygen Sensor Notice in Service Precautions.


HEATED OXYGEN SENSOR (HO2S) REPLACEMENT BANK 2 SENSOR 1

TOOLS REQUIRED
J 39194-B Oxygen Sensor Wrench

REMOVAL PROCEDURE
1. Raise the vehicle.

CAUTION: Refer to Vehicle Lifting Caution in Service Precautions.


imageOpen In New TabZoom/Print

2. Disconnect the connector (1) for the HO2S.

NOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Service Precautions.

3. Remove the HO2S (2) using a J 39194-B.

NOTE: Refer to Excessive Force and Oxygen Sensor Notice in Service Precautions.
Feb 12, 2021 at 4:47 AM